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compress_test.go
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package whisper
import (
"encoding/json"
"flag"
"fmt"
"log"
"math"
"math/rand"
"os"
"reflect"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/kr/pretty"
)
func init() {
if err := os.MkdirAll("tmp", 0755); err != nil {
panic(err)
}
}
func TestBitsReadWrite(t *testing.T) {
buf := make([]byte, 256)
var bw bitsWriter
bw.buf = buf
bw.bitPos = 7
var br bitsReader
br.buf = buf
br.bitPos = 7
input := []struct {
val uint64
len int
}{
{len: 8, val: 5},
{len: 16, val: 97},
{len: 32, val: 123},
{len: 64, val: math.Float64bits(95.1)},
{len: 64, val: 0xf1f2f3f4f5f6f7f8},
{len: 1, val: 1},
{len: 15, val: 0x7f7f},
{len: 55, val: 0x7f2f3f4f5f6f7f},
}
for _, d := range input {
bw.Write(d.len, d.val)
}
for i, d := range input {
if got, want := br.Read(d.len), d.val; got != want {
t.Errorf("%d: br.Read(%d) = %x; want %b", i, d.len, got, want)
}
}
}
func init() {
log.SetFlags(log.Lshortfile)
rand.Seed(time.Now().UnixNano())
}
func TestBlockReadWrite1(t *testing.T) {
for i := 0; i < 1; i++ {
var acv archiveInfo
acv.secondsPerPoint = 1
acv.numberOfPoints = 64
acv.cblock.lastByteBitPos = 7
acv.blockSize = 64 * PointSize
acv.blockRanges = make([]blockRange, 1)
ts := 1543689630
var delta int
next := func(incs ...int) int {
for _, i := range incs {
delta += i
}
return ts + delta
}
var input []dataPoint
{
rand.Seed(time.Now().Unix())
input = append(input, dataPoint{interval: next(1), value: 1})
input = append(input, dataPoint{interval: next(1), value: 1})
input = append(input, dataPoint{interval: next(1), value: 1})
for i := 0; i < 200; i++ {
input = append(input, dataPoint{interval: next(rand.Intn(10)), value: rand.NormFloat64()})
}
}
buf := make([]byte, acv.blockSize)
_, left, _ := acv.AppendPointsToBlock(buf, input)
points := make([]dataPoint, 0, 200)
points, _, err := acv.ReadFromBlock(buf, points, ts, ts+60*60*60)
if err != nil {
t.Error(err)
}
if !reflect.DeepEqual(input, append(points, left...)) {
if diff := cmp.Diff(input, points, cmp.AllowUnexported(dataPoint{})); diff != "" {
t.Error(diff)
}
t.FailNow()
}
}
}
func TestBlockReadWrite2(t *testing.T) {
for i := 0; i < 1; i++ {
var acv archiveInfo
acv.secondsPerPoint = 1
acv.numberOfPoints = 100
acv.cblock.lastByteBitPos = 7
acv.blockSize = int(float32(acv.numberOfPoints) * avgCompressedPointSize)
acv.blockRanges = make([]blockRange, 1)
var input []dataPoint = []dataPoint{
{interval: 1544456874, value: 12},
{interval: 1544456875, value: 24},
{interval: 1544456876, value: 15},
{interval: 1544456877, value: 1},
{interval: 1544456878, value: 2},
{interval: 1544456888, value: 3},
{interval: 1544456889, value: 4},
{interval: 1544457000, value: 4},
{interval: 1544458000, value: 4},
{interval: 1544476889, value: 4},
}
buf := make([]byte, acv.blockSize)
acv.AppendPointsToBlock(buf, input[:1])
acv.AppendPointsToBlock(buf[acv.cblock.lastByteOffset:], input[1:5])
acv.AppendPointsToBlock(buf[acv.cblock.lastByteOffset:], input[5:])
points, _, err := acv.ReadFromBlock(buf, make([]dataPoint, 0, 200), 1544456874, 1544477000)
if err != nil {
t.Error(err)
}
if !reflect.DeepEqual(input, points) {
pretty.Printf("%# v\n", input)
pretty.Printf("%# v\n", points)
if diff := cmp.Diff(input, points, cmp.AllowUnexported(dataPoint{})); diff != "" {
t.Error(diff)
}
t.FailNow()
}
}
}
func TestCompressedWhisperReadWrite1(t *testing.T) {
fpath := "tmp/comp1.whisper"
os.Remove(fpath)
whisper, err := CreateWithOptions(
fpath,
[]*Retention{
{secondsPerPoint: 1, numberOfPoints: 100},
{secondsPerPoint: 5, numberOfPoints: 100},
},
Sum,
0.7,
&Options{Compressed: true, PointsPerBlock: 7200},
)
if err != nil {
panic(err)
}
ts := int(Now().Add(time.Second * -60).Unix())
var delta int
next := func(incs int) int {
delta += incs
return ts + delta
}
input := []*TimeSeriesPoint{
{Time: next(1), Value: 12},
{Time: next(1), Value: 24},
{Time: next(1), Value: 15},
{Time: next(1), Value: 1},
{Time: next(1), Value: 2},
{Time: next(10), Value: 3},
{Time: next(1), Value: 4},
{Time: next(1), Value: 15.5},
{Time: next(1), Value: 14.0625},
{Time: next(1), Value: 3.25},
{Time: next(1), Value: 8.625},
{Time: next(1), Value: 13.1},
}
if err := whisper.UpdateMany(input); err != nil {
t.Error(err)
}
// this negative data points should be ignored
outOfOrderDataPoint := TimeSeriesPoint{Time: next(0) - 10, Value: 12}
if err := whisper.UpdateMany([]*TimeSeriesPoint{&outOfOrderDataPoint}); err != nil {
t.Error(err)
}
// if got, want := whisper.archives[0].stats.discard.oldInterval, uint32(1); got != want {
// t.Errorf("whisper.archives[0].stats.discard.oldInterval = %d; want %d", got, want)
// }
whisper.Close()
whisper, err = OpenWithOptions(fpath, &Options{})
if err != nil {
t.Fatal(err)
}
// t.Run("out_of_order_write", func(t *testing.T) {
// expectVals := make([]float64, 60)
// for i := 0; i < 60; i++ {
// expectVals[i] = math.NaN()
// }
// for _, p := range input {
// expectVals[p.Time-ts-1] = p.Value
// }
// expectVals[outOfOrderDataPoint.Time-ts-1] = outOfOrderDataPoint.Value
// expect := &TimeSeries{
// fromTime: ts + 1,
// untilTime: ts + 61,
// step: 1,
// values: expectVals,
// }
// if ts, err := whisper.Fetch(ts, ts+300); err != nil {
// t.Error(err)
// } else if diff := cmp.Diff(ts, expect, cmp.AllowUnexported(TimeSeries{}), cmpopts.EquateNaNs()); diff != "" {
// t.Error(diff)
// }
// })
// this test case is no longer valid for cwhisper version 2, buffer
// design is deprecated.
t.Run("buffer_overflow", func(t *testing.T) {
// fmt.Println("---")
// whisper.archives[0].dumpDataPointsCompressed()
if err := whisper.UpdateMany([]*TimeSeriesPoint{
{Time: next(5), Value: 10},
{Time: next(5), Value: 11},
{Time: next(5), Value: 12},
}); err != nil {
t.Error(err)
}
// fmt.Println("---")
// whisper.archives[0].dumpDataPointsCompressed()
if err := whisper.UpdateMany([]*TimeSeriesPoint{
{Time: next(0) - 15, Value: 13},
{Time: next(0) - 10, Value: 13},
}); err != nil {
t.Error(err)
}
// fmt.Println("---")
// whisper.archives[0].dumpDataPointsCompressed()
// debugCompress = true
if err := whisper.UpdateMany([]*TimeSeriesPoint{
{Time: next(0) - 5, Value: 14},
{Time: next(0) - 0, Value: 15},
}); err != nil {
t.Error(err)
}
// debugCompress = false
// fmt.Println("---")
// whisper.archives[0].dumpDataPointsCompressed()
expect := []TimeSeriesPoint{
{Time: next(0) - 14, Value: math.NaN()},
{Time: next(0) - 13, Value: math.NaN()},
{Time: next(0) - 12, Value: math.NaN()},
{Time: next(0) - 11, Value: math.NaN()},
{Time: next(0) - 10, Value: 10},
{Time: next(0) - 9, Value: math.NaN()},
{Time: next(0) - 8, Value: math.NaN()},
{Time: next(0) - 7, Value: math.NaN()},
{Time: next(0) - 6, Value: math.NaN()},
{Time: next(0) - 5, Value: 14},
{Time: next(0) - 4, Value: math.NaN()},
{Time: next(0) - 3, Value: math.NaN()},
{Time: next(0) - 2, Value: math.NaN()},
{Time: next(0) - 1, Value: math.NaN()},
{Time: next(0) - 0, Value: 15},
}
if ts, err := whisper.Fetch(next(0)-15, next(0)); err != nil {
t.Error(err)
} else if diff := cmp.Diff(ts.Points(), expect, cmp.AllowUnexported(TimeSeries{}), cmpopts.EquateNaNs()); diff != "" {
t.Error(diff)
}
})
whisper.Close()
}
func TestCompressedWhisperReadWrite2(t *testing.T) {
fpath := "tmp/comp2.whisper"
os.Remove(fpath)
whisper, err := CreateWithOptions(
fpath,
[]*Retention{
{secondsPerPoint: 1, numberOfPoints: 100},
{secondsPerPoint: 5, numberOfPoints: 100},
},
Sum,
0.7,
&Options{Compressed: true, PointsPerBlock: 7200},
)
if err != nil {
panic(err)
}
nowTs := 1544478230
Now = func() time.Time { return time.Unix(int64(nowTs), 0) }
defer func() { Now = func() time.Time { return time.Now() } }()
input := []*TimeSeriesPoint{
{Time: nowTs - 300, Value: 666},
{Time: 1544478201, Value: 12},
{Time: 1544478211, Value: 24},
{Time: 1544478212, Value: 15},
{Time: 1544478213, Value: 1},
{Time: 1544478214, Value: 2},
{Time: 1544478224, Value: 3},
{Time: 1544478225, Value: 4},
{Time: 1544478226, Value: 15.5},
{Time: 1544478227, Value: 14.0625},
{Time: 1544478228, Value: 3.25},
{Time: 1544478229, Value: 8.625},
{Time: nowTs, Value: 13.1},
}
for _, p := range input {
if err := whisper.UpdateMany([]*TimeSeriesPoint{p}); err != nil {
t.Error(err)
}
}
whisper.Close()
whisper, err = OpenWithOptions(fpath, &Options{Compressed: true, PointsPerBlock: 7200})
if err != nil {
t.Fatal(err)
}
{
expectVals := make([]float64, 4)
for i := 0; i < 4; i++ {
expectVals[i] = math.NaN()
}
expectVals[1] = input[0].Value
expect := &TimeSeries{
fromTime: 1544477925,
untilTime: 1544477945,
step: 5,
values: expectVals,
}
if ts, err := whisper.Fetch(nowTs-310, nowTs-290); err != nil {
t.Error(err)
} else if diff := cmp.Diff(ts, expect, cmp.AllowUnexported(TimeSeries{}), cmpopts.EquateNaNs()); diff != "" {
t.Error(diff)
}
}
{
expectVals := make([]float64, 30)
for i := 0; i < 30; i++ {
expectVals[i] = math.NaN()
}
for _, p := range input[1:] {
expectVals[29-(nowTs-p.Time)] = p.Value
}
expect := &TimeSeries{
fromTime: 1544478201,
untilTime: 1544478231,
step: 1,
values: expectVals,
}
if ts, err := whisper.Fetch(nowTs-30, nowTs); err != nil {
t.Error(err)
} else if diff := cmp.Diff(ts, expect, cmp.AllowUnexported(TimeSeries{}), cmpopts.EquateNaNs()); diff != "" {
t.Error(diff)
}
}
}
var fullTest3 = flag.Bool("full-test3", false, "run a full test of TestCompressedWhisperReadWrite3")
var cacheTest3Data = flag.Bool("debug-test3", false, "save a data of TestCompressedWhisperReadWrite3 for debugging")
// To run a full test of TestCompressedWhisperReadWrite3, it would take about 10
// minutes, the slowness comes from standard whisper file propagation (around 10
// times slower and comsume much more memory than compressed format).
//
// Parallel is disabled because we need to manipulate Now in order to simulate
// updates.
//
// TODO: cache data to make failed tests repeatable and easier to debug
func TestCompressedWhisperReadWrite3(t *testing.T) {
// TODO: add a test case of mixing random and sequential values/times
inputs := []struct {
name string
randLimit func() int
fullTest func() bool
gen func(prevTime time.Time, index int) *TimeSeriesPoint
}{
{
name: "random_time",
fullTest: func() bool { return true },
gen: func(prevTime time.Time, index int) *TimeSeriesPoint {
return &TimeSeriesPoint{
Value: 0,
Time: int(prevTime.Add(time.Duration(rand.Intn(4096)+1) * time.Second).Unix()),
}
},
},
{
name: "random_time_value",
fullTest: func() bool { return true },
gen: func(prevTime time.Time, index int) *TimeSeriesPoint {
return &TimeSeriesPoint{
Value: rand.NormFloat64(),
Time: int(prevTime.Add(time.Duration(rand.Intn(3600*24)+1) * time.Second).Unix()),
}
},
},
{
name: "less_random_time_value",
fullTest: func() bool { return true },
// randLimit: func() int { return 300 },
gen: func(prevTime time.Time, index int) *TimeSeriesPoint {
return &TimeSeriesPoint{
Value: 2000.0 + float64(rand.Intn(1000)),
Time: int(prevTime.Add(time.Duration(rand.Intn(60)) * time.Second).Unix()),
}
},
},
{
name: "fast_simple",
fullTest: func() bool { return true },
randLimit: func() int { return 300 },
gen: func(prevTime time.Time, index int) *TimeSeriesPoint {
return &TimeSeriesPoint{Value: 2000.0 + float64(rand.Intn(1000)), Time: int(prevTime.Add(time.Second * 60).Unix())}
},
},
// these are slow tests, turned off by default
{
name: "random_value",
fullTest: func() bool { return *fullTest3 },
gen: func(prevTime time.Time, index int) *TimeSeriesPoint {
return &TimeSeriesPoint{
Value: rand.NormFloat64(),
Time: int(prevTime.Add(time.Second).Unix()),
}
},
},
{
name: "random_value2",
fullTest: func() bool { return *fullTest3 },
randLimit: func() int { return rand.Intn(300) + (60 * 60 * 24) },
gen: func(prevTime time.Time, index int) *TimeSeriesPoint {
return &TimeSeriesPoint{
Value: 2000.0 + float64(rand.Intn(1000)),
Time: int(prevTime.Add(time.Second).Unix()),
}
},
},
{
name: "simple",
fullTest: func() bool { return *fullTest3 },
gen: func(prevTime time.Time, index int) *TimeSeriesPoint {
return &TimeSeriesPoint{Value: 0, Time: int(prevTime.Add(time.Second).Unix())}
},
},
}
os.MkdirAll("tmp", 0755)
inMemory := true
for i := range inputs {
input := inputs[i]
if input.randLimit == nil {
input.randLimit = func() int { return rand.Intn(300) }
}
t.Run(input.name, func(t *testing.T) {
// can't run tests parallel here because they modify Now
// t.Parallel()
t.Logf("case: %s\n", input.name)
fpath := fmt.Sprintf("tmp/test3_%s.wsp", input.name)
os.Remove(fpath)
os.Remove(fpath + ".cwsp")
var dataDebugFile *os.File
if *cacheTest3Data {
var err error
dataDebugFile, err = os.Create(fmt.Sprintf("tmp/test3_%s.data", input.name))
if err != nil {
t.Fatal(err)
}
}
cwhisper, err := CreateWithOptions(
fpath+".cwsp",
[]*Retention{
{secondsPerPoint: 1, numberOfPoints: 172800}, // 1s:2d
{secondsPerPoint: 60, numberOfPoints: 40320}, // 1m:28d
{secondsPerPoint: 3600, numberOfPoints: 17520}, // 1h:2y
},
Average,
0,
&Options{Compressed: true, PointsPerBlock: 7200, InMemory: inMemory},
)
if err != nil {
panic(err)
}
ncwhisper, err := CreateWithOptions(
fpath,
[]*Retention{
{secondsPerPoint: 1, numberOfPoints: 172800}, // 1s:2d
{secondsPerPoint: 60, numberOfPoints: 40320}, // 1m:28d
{secondsPerPoint: 3600, numberOfPoints: 17520}, // 1h:2y
},
Average,
0,
&Options{Compressed: false, PointsPerBlock: 7200, InMemory: inMemory},
)
if err != nil {
panic(err)
}
cwhisper.Close()
ncwhisper.Close()
// var now = time.Now()
var now = time.Unix(1589720099, 0)
var total = 60*60*24*365*2 + 37
var start = now.Add(time.Second * time.Duration(total) * -1)
Now = func() time.Time { return start }
defer func() { Now = func() time.Time { return time.Now() } }()
// var psArr [][]*TimeSeriesPoint
var ps []*TimeSeriesPoint
var limit = input.randLimit()
var statTotalUpdates, extended, totalPoints int
firstArchiveBound := cwhisper.Retentions()[0].MaxRetention()
for i := 0; i < total; i++ {
p := input.gen(start, i)
var toAppend = true
if len(ps) == 0 || p.Time-ps[0].Time < firstArchiveBound {
ps = append(ps, p)
start = time.Unix(int64(p.Time), 0)
toAppend = false
}
if toAppend || len(ps) >= limit || start.After(now) {
// fmt.Printf("%d toAppend = %v\r", start.Unix(), len(ps))
// fmt.Printf("progress: %.2f%% len(points): %d\r", 100-float64(now.Unix()-start.Unix())*100/float64(total), len(ps))
limit = input.randLimit()
statTotalUpdates++
totalPoints += len(ps)
// psArr = append(psArr, ps)
cwhisper, err = OpenWithOptions(fpath+".cwsp", &Options{InMemory: inMemory})
if err != nil {
t.Fatal(err)
}
if err := cwhisper.UpdateMany(ps); err != nil {
t.Fatal(err)
}
if err := cwhisper.Close(); err != nil {
t.Fatal(err)
}
if cwhisper.Extended {
// for _, a := range cwhisper.archives {
// t.Logf("extended: %s: %d\n", a.Retention, a.totalPoints())
// }
extended++
}
if input.fullTest() {
if *cacheTest3Data {
// if _, err := fmt.Fprintf(dataDebugFile, "%d\n", len(ps)); err != nil {
// t.Fatal(err)
// }
for _, p := range ps {
if _, err := fmt.Fprintf(dataDebugFile, "%d %d %d %v\n", p.Time, p.Time-mod(p.Time, 60), p.Time-mod(p.Time, 3600), p.Value); err != nil {
t.Fatal(err)
}
}
}
ncwhisper, err = OpenWithOptions(fpath, &Options{InMemory: inMemory})
if err != nil {
t.Fatal(err)
}
if err := ncwhisper.UpdateMany(ps); err != nil {
t.Fatal(err)
}
if err := ncwhisper.Close(); err != nil {
t.Fatal(err)
}
}
ps = ps[:0]
}
if start.After(now) {
break
}
}
if *cacheTest3Data {
dataDebugFile.Close()
}
t.Logf("statTotalUpdates: %d extended: %d totalPoints: %d\n", statTotalUpdates, extended, totalPoints)
// for _, a := range cwhisper.archives {
// t.Logf("%s: %d\n", a.Retention, a.totalPoints())
// }
if inMemory {
if err := newMemFile(fpath).dumpOnDisk(fpath); err != nil {
t.Fatal(err)
}
if err := newMemFile(fpath + ".cwsp").dumpOnDisk(fpath + ".cwsp"); err != nil {
t.Fatal(err)
}
}
// {
// data, err := json.Marshal(psArr)
// if err != nil {
// panic(err)
// }
// if err := ioutil.WriteFile("test3.json", data, 0644); err != nil {
// panic(err)
// }
// }
if input.fullTest() {
t.Log("go", "run", "cmd/compare.go", "-v", "-now", fmt.Sprintf("%d", now.Unix()), fpath, fpath+".cwsp")
// output, err := exec.Command("go", "run", "cmd/compare.go", "-now", fmt.Sprintf("%d", now.Unix()), fpath, fpath+".cwsp").CombinedOutput()
output, err := Compare(fpath, fpath+".cwsp", int(now.Unix()), false, "", false, false, 2)
if err != nil {
t.Log(string(output))
t.Error(err)
}
}
std, err := os.Stat(fpath)
if err != nil {
t.Error(err)
}
cmp, err := os.Stat(fpath + ".cwsp")
if err != nil {
t.Error(err)
}
t.Logf("compression ratio %s: %.2f%%\n", input.name, float64(cmp.Size()*100)/float64(std.Size()))
})
}
}
func TestCompressedWhisperSingleRetentionOutOfOrderWrite(t *testing.T) {
fpath := fmt.Sprintf("tmp/test_single_retention_ooo.cwsp")
os.Remove(fpath)
rets := []*Retention{
{secondsPerPoint: 1, numberOfPoints: 7200},
}
cwhisper, err := CreateWithOptions(
fpath, rets, Sum, 0,
&Options{
Compressed: true, PointsPerBlock: 1200,
InMemory: false, IgnoreNowOnWrite: true,
},
)
if err != nil {
panic(err)
}
now := int(time.Now().Unix()) - 3600
cwhisper.UpdateMany([]*TimeSeriesPoint{
{Value: 1, Time: now + 0},
{Value: 1, Time: now + 1},
{Value: 1, Time: now + 2},
})
cwhisper.UpdateMany([]*TimeSeriesPoint{
{Value: 0, Time: now + 1},
})
data, err := cwhisper.Fetch(now-1, now+2)
if err != nil {
t.Error(err)
}
if got, want := data.Points(), []TimeSeriesPoint{
{Time: now + 0, Value: 1},
{Time: now + 1, Value: 1},
{Time: now + 2, Value: 1},
}; !reflect.DeepEqual(got, want) {
t.Errorf("data.Points() = %v; want %v", got, want)
}
cwhisper.Close()
}
func TestCompressTo(t *testing.T) {
fpath := "compress_to.wsp"
os.Remove(fpath)
whisper, err := CreateWithOptions(
fpath,
[]*Retention{
{secondsPerPoint: 1, numberOfPoints: 172800}, // 1s:2d
{secondsPerPoint: 60, numberOfPoints: 40320}, // 1m:28d
{secondsPerPoint: 3600, numberOfPoints: 17520}, // 1h:2y
},
Average,
0,
&Options{Compressed: false, PointsPerBlock: 7200, InMemory: true},
)
if err != nil {
panic(err)
}
whisper.Close()
for _, archive := range whisper.archives {
var ps []*TimeSeriesPoint
for i := 0; i < archive.numberOfPoints; i++ {
start := Now().Add(time.Second * time.Duration(archive.secondsPerPoint*i) * -1)
ps = append(ps, &TimeSeriesPoint{
// Time: int(start.Add(time.Duration(i) * time.Second).Unix()),
Time: int(start.Unix()),
// Value: float64(i),
// Value: 2000.0 + float64(rand.Intn(100000))/100.0,
// Value: rand.NormFloat64(),
Value: float64(rand.Intn(100000)),
})
}
whisper, err = OpenWithOptions(fpath, &Options{InMemory: true})
if err != nil {
t.Fatal(err)
}
if err := whisper.UpdateMany(ps); err != nil {
t.Fatal(err)
}
if err := whisper.Close(); err != nil {
t.Fatal(err)
}
}
whisper.file.(*memFile).dumpOnDisk(fpath)
whisper, err = OpenWithOptions(fpath, &Options{})
if err != nil {
t.Fatal(err)
}
os.Remove(fpath + ".cwsp")
if err := whisper.CompressTo(fpath + ".cwsp"); err != nil {
t.Fatal(err)
}
// output, err := exec.Command("go", "run", "cmd/compare.go", fpath, fpath+".cwsp").CombinedOutput()
t.Log("go", "run", "cmd/compare.go", "-v", fpath, fpath+".cwsp")
output, err := Compare(fpath, fpath+".cwsp", 0, false, "", false, false, 2)
if err != nil {
t.Fatalf("%s: %s", err, output)
}
}
func TestRandomReadWrite(t *testing.T) {
// os.Remove("test_random_read_write.wsp")
fileTs := time.Now().Unix()
cwhisper, err := CreateWithOptions(
fmt.Sprintf("test_random_read_write.%d.wsp", fileTs),
[]*Retention{
{secondsPerPoint: 1, numberOfPoints: 1728000},
// {secondsPerPoint: 60, numberOfPoints: 40320},
// {secondsPerPoint: 3600, numberOfPoints: 17520},
},
Sum,
0,
&Options{Compressed: true, PointsPerBlock: 7200},
)
if err != nil {
panic(err)
}
start := Now()
ptime := start
var ps []*TimeSeriesPoint
var vals []float64
var entropy int
for i := 0; i < cwhisper.Retentions()[0].numberOfPoints; i++ {
gap := rand.Intn(10) + 1
ptime = ptime.Add(time.Second * time.Duration(gap))
if ptime.After(start.Add(time.Duration(cwhisper.Retentions()[0].numberOfPoints) * time.Second)) {
break
}
for j := gap; j > 1; j-- {
vals = append(vals, math.NaN())
}
ts := &TimeSeriesPoint{
Time: int(ptime.Unix()),
Value: rand.NormFloat64(),
// Value: 2000.0 + float64(rand.Intn(100000))/100.0,
// Value: float64(rand.Intn(100000)),
}
ps = append(ps, ts)
vals = append(vals, ts.Value)
entropy++
}
if err := cwhisper.UpdateMany(ps); err != nil {
t.Fatal(err)
}
Now = func() time.Time { return time.Unix(int64(ps[len(ps)-1].Time), 0) }
defer func() { Now = func() time.Time { return time.Now() } }()
ts, err := cwhisper.Fetch(int(start.Unix()), int(ptime.Unix()))
if err != nil {
t.Fatal(err)
}
// log.Printf("entropy = %+v\n", entropy)
// log.Printf("len(vals) = %+v\n", len(vals))
// log.Printf("len(ts.Values()) = %+v\n", len(ts.Values()))
if diff := cmp.Diff(ts.Values(), vals, cmp.AllowUnexported(dataPoint{}), cmpopts.EquateNaNs()); diff != "" {
// t.Error(diff)
t.Error("mismatch")
cache, err := os.Create(fmt.Sprintf("test_random_read_write.%d.json", fileTs))
if err != nil {
t.Fatal(err)
}
if err := json.NewEncoder(cache).Encode(ps); err != nil {
t.Fatal(err)
}
cache.Close()
}
if err := cwhisper.Close(); err != nil {
t.Fatal(err)
}
}
func TestFillCompressed(t *testing.T) {
fpath := "fill.wsp"
os.Remove(fpath)
os.Remove(fpath + ".cwsp")
standard, err := CreateWithOptions(
fpath,
[]*Retention{
{secondsPerPoint: 1, numberOfPoints: 172800}, // 1s:2d
{secondsPerPoint: 60, numberOfPoints: 40320}, // 1m:28d
{secondsPerPoint: 3600, numberOfPoints: 17520}, // 1h:2y
},
Average,
0,
&Options{Compressed: false, PointsPerBlock: 7200, InMemory: true},
)
if err != nil {
panic(err)
}
points := []*TimeSeriesPoint{}
twoYearsAgo := Now().Add(time.Hour * 24 * 365 * -2)
for i := 0; i < 2*365*24-28*24; i++ {
points = append(points, &TimeSeriesPoint{
Time: int(twoYearsAgo.Add(time.Hour * time.Duration(i)).Unix()),
Value: rand.NormFloat64(),
})
}
if err := standard.UpdateMany(points); err != nil {
t.Error(err)
}
points = []*TimeSeriesPoint{}
oneMonthAgo := Now().Add(time.Hour * 24 * -28)
for i := 0; i < 28*24*60-2*24*60; i++ {
points = append(points, &TimeSeriesPoint{
Time: int(oneMonthAgo.Add(time.Minute * time.Duration(i)).Unix()),
Value: rand.NormFloat64(),
})
}
if err := standard.UpdateMany(points); err != nil {
t.Error(err)
}
compressed, err := CreateWithOptions(
fpath+".cwsp",
[]*Retention{
{secondsPerPoint: 1, numberOfPoints: 172800, avgCompressedPointSize: 9}, // 1s:2d
{secondsPerPoint: 60, numberOfPoints: 40320, avgCompressedPointSize: 9}, // 1m:28d
{secondsPerPoint: 3600, numberOfPoints: 17520, avgCompressedPointSize: 9}, // 1h:2y
},
Average,
0,
&Options{Compressed: true, PointsPerBlock: 7200, InMemory: true},
)
if err != nil {
panic(err)
}
points = []*TimeSeriesPoint{}
twoDaysAgo := Now().Add(time.Hour * 24 * -2)
for i := 0; i < 60*60*24*2; i++ {
points = append(points, &TimeSeriesPoint{
Time: int(twoDaysAgo.Add(time.Second * time.Duration(i)).Unix()),
Value: rand.NormFloat64(),
})
}
if err := compressed.UpdateMany(points); err != nil {
t.Error(err)
}
if err := compressed.file.(*memFile).dumpOnDisk(fpath + ".original.cwsp"); err != nil {
t.Error(err)
}
if err := compressed.FillCompressed(standard); err != nil {
t.Error(err)
}
if err := compressed.file.(*memFile).dumpOnDisk(fpath + ".cwsp"); err != nil {
t.Error(err)
}
if err := standard.file.(*memFile).dumpOnDisk(fpath); err != nil {
t.Error(err)
}
compare := func(w1, w2 *Whisper, from, until int) {
valsc, err := w1.Fetch(from, until)
if err != nil {
t.Error(err)
}
valss, err := w2.Fetch(from, until)
if err != nil {
t.Error(err)
}
var diff, same int
for i := 0; i < len(valsc.values); i++ {
vc := valsc.values[i]
vs := valss.values[i]
if math.IsNaN(vc) && math.IsNaN(vs) {
same++
} else if vc != vs {
t.Errorf("%d/%d %d: %v != %v\n", i, len(valsc.values), valsc.fromTime+i*valsc.step, vc, vs)
diff++
} else {
same++
}
}
if diff > 0 {
t.Errorf("diff = %d", diff)
t.Errorf("same = %d", same)
}
}
t.Log("comparing 2 years archive")
compare(compressed, standard, int(twoYearsAgo.Unix()), int(Now().Add(time.Hour*24*-28).Unix()))
t.Log("comparing 1 month archive")
compare(compressed, standard, int(oneMonthAgo.Add(time.Hour).Unix()), int(Now().Add(time.Hour*24*-2-time.Hour).Unix()))
oldCompressed, err := OpenWithOptions(fpath+".original.cwsp", &Options{})
if err != nil {
t.Error(err)
}
t.Log("comparing 2 days archive")
compare(compressed, oldCompressed, int(Now().Add(time.Hour*24*-2+time.Hour).Unix()), int(Now().Unix()))
}
func TestSanitizeAvgCompressedPointSizeOnCreate(t *testing.T) {
var cases = []struct {
rets []*Retention
expect float32
}{
{
rets: []*Retention{
{secondsPerPoint: 1, numberOfPoints: 100, avgCompressedPointSize: math.Float32frombits(0xffc00000)}, // 32bits nan
{secondsPerPoint: 5, numberOfPoints: 100},
},
expect: avgCompressedPointSize,
},
{
rets: []*Retention{
{secondsPerPoint: 1, numberOfPoints: 100, avgCompressedPointSize: float32(math.NaN())}, // 62 bits nan
{secondsPerPoint: 5, numberOfPoints: 100},
},
expect: avgCompressedPointSize,
},
{
rets: []*Retention{
{secondsPerPoint: 1, numberOfPoints: 100, avgCompressedPointSize: 0},
{secondsPerPoint: 5, numberOfPoints: 100},